Crew members feared for Jennifer Lawrence when machinery malfunctioned.

Yahoo Contributor Network - It was a scary day of filming for Jennifer Lawrence.

COMMENT | Sometimes it's easy to forget the risks taken when making films, but on-set mishaps serve as a stark reminder that accidents happen and that it's so easy for stunts to end badly.

Whilst 'The Hunger Games' series has heavily relied on CGI thus far, as often as possible crew members build fully-functional sets so that environments look real, rather than computer generated, making the actors and actresses do as much as they can before adding final elements in post-production.

With constant action in 'The Hunger Games: Mockingjay' it comes as no surprise that the production team want Jennifer Lawrence to do her own stunts for the final two films of the franchise, although they didn't count on a smoke machine malfunctioning during one sequence, leaving her choking during filming.

A source said "It was horrifying… Filming came to an abrupt halt when this fog machine broke and began spewing so much dense smoke during a tunnel sequence that Jennifer literally disappeared from sight - and everybody panicked!"

The incident sounds quite traumatic as apparently the actors could only be located by the sound of their coughing and gagging and it was impossible to see them through the smoke.

The source continued "After several scary minutes, a rescue crew finally found the star and carried her out, hacking and gagging. Jennifer's one tough gal, but she looked really shook up and kept complaining she felt very nauseous - like she was suffering from vertigo."

It's not the first time that Lawrence has had difficulty filming stunts as she has previously spoken about the nausea she suffered when shooting the cornucopia scenes for 'The Hunger Games: Catching Fire' although it's safe to say that she always takes work in her stride and remarkably still remains grounded after all of her success.

I think I speak for all fans of 'The Hunger Games' when I say as much as we want these scenes to look realistic when the film comes out next year, we'd much rather that Jennifer Lawrence and co. are safe when filming.

Fingers crossed that the cast had some time off over Christmas to recover and that no more hiccups happen when they complete filming over the next few months!

Rachel MacGregoris obsessed with film. She's gone from believing toys really do come to life as a child to wondering if we're set for a dystopian future as an adult. FollowRachel MacGregoronTwitter.